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[v3,3/5] platform: generic: spacemit: k1: move hart init to nascent hook

Message ID 20260827-spacemit-k3-v3-3-5d8dbb68539d@linux.spacemit.com
State New
Headers show
Series [v3,1/5] lib: sbi: select expected trap handler per hart | expand

Commit Message

Troy Mitchell Aug. 27, 2026, 9:19 a.m. UTC 
cold_boot_allowed() is a policy query and should not modify per-hart
state. The K1 callback currently programs ML2SETUP as a side effect.

Move the ML2SETUP programming to nascent_init(), which runs on every
hart before common initialization. Chain generic_nascent_init() to keep
the generic per-hart setup intact.

Fixes: 1f84ec2ac22e ("platform: generic: spacemit: add K1")
Reported-by: Bo Gan <ganboing@gmail.com>
Link: https://lore.kernel.org/r/56220293-88e3-451f-833e-8251656a83d9@gmail.com
Signed-off-by: Troy Mitchell <troy.mitchell@linux.spacemit.com>
Reviewed-by: Bo Gan <ganboing@gmail.com>
---
 platform/generic/spacemit/k1.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)
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Patch

diff --git a/platform/generic/spacemit/k1.c b/platform/generic/spacemit/k1.c
index 7ee5f17a..19a9b27c 100644
--- a/platform/generic/spacemit/k1.c
+++ b/platform/generic/spacemit/k1.c
@@ -8,6 +8,7 @@ 
  */
 
 #include <platform_override.h>
+#include <sbi/riscv_asm.h>
 #include <sbi/riscv_io.h>
 #include <sbi/sbi_hsm.h>
 #include <spacemit/k1.h>
@@ -86,16 +87,23 @@  static int spacemit_k1_early_init(bool cold_boot)
 	return 0;
 }
 
-static bool spacemit_cold_boot_allowed(u32 hartid)
+static int spacemit_k1_nascent_init(void)
 {
-	csr_set(CSR_ML2SETUP, 1 << (hartid % PLATFORM_MAX_CPUS_PER_CLUSTER));
+	csr_set(CSR_ML2SETUP,
+		1 << (current_hartid() % PLATFORM_MAX_CPUS_PER_CLUSTER));
+
+	return generic_nascent_init();
+}
 
+static bool spacemit_cold_boot_allowed(u32 hartid)
+{
 	return !hartid;
 }
 
 static int spacemit_k1_platform_init(const void *fdt, int nodeoff,
 				     const struct fdt_match *match)
 {
+	generic_platform_ops.nascent_init = spacemit_k1_nascent_init;
 	generic_platform_ops.early_init = spacemit_k1_early_init;
 	generic_platform_ops.cold_boot_allowed = spacemit_cold_boot_allowed;